Spectroscopy of Some Low-Lying States in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Zn</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>69</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>

Steiner, W.; Hausman, H.J.; Kent, J.; Duray, J.R.; Gearhart, N.L.; Sinclair, J. W. D.

doi:10.1103/physrevc.4.1684

Cited by 14 publications

(9 citation statements)

References 15 publications

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“…The systematic error was estimated to be 6% by taking a quadratic sum of the uncertainties derived from the ambiguities in the relative normalization (4%) and in the proton energies (4%). The values obtained are in good agreement with the parameters (Γ p , Γ total , E reso ) = (20 keV, 60 keV, 4873 keV) previously measured in normal kinematics [18]. When we sought the parameters assuming l = 1, 2, they did not converge, ruling out these two angular momenta.…”

supporting

confidence: 71%

“…< 4.8 MeV, as described in ref. [18]. In the excitation function, the resonance of 69 Ga was clearly observed.…”

mentioning

confidence: 80%

“…In addition, the inelastic channels 68 Zn(p, p) 68 Zn * (1.08 MeV, 1.88 MeV) were observed to be negligibly small compared to the elastic channel in this reaction at 160 degrees in the lab. frame [18] so that we may consider only the elastic channel. A beam of 68 Zn 12+ with an energy of 5.5 MeV/nucleon, provided by the Japan Atomic Energy Agency (JAEA) tandem accelerator and the superconducting linac, was focused onto a polyethylene target with a thickness of 3.2 ± 0.2 mg/cm 2 .…”

mentioning

confidence: 99%

“…We measured the proton resonance elastic scattering using a stable 68 Zn beam, allowing us to observe the resonance states in 69 Ga. The excitation function of proton elastic scattering had been measured in normal kinematics with a step of 10 or 20 keV for incident proton beam energy [18]. Since the resonance at 4.876 MeV in E c.m.…”

mentioning

confidence: 99%

“…In the calculation, the potential scattering was obtained using the global optical model potential set [21] as used in ref. [18]. The R-matrix calculation including the experimental energy resolution was fitted to the experimental data from E c.m.…”

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confidence: 99%

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Proton resonance elastic scattering in inverse kinematics on the medium heavy nucleus 68Zn

et al. 2010

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Abstract. An isobaric analog resonance of 69 Zn was studied by the resonance elastic scattering of p( 68 Zn, p) with a 5.5 MeV/nucleon 68 Zn beam and a thick polyethylene target. The excitation function of the differential cross-section of proton elastic scattering was measured around 0 degrees in the laboratory frame by the thick target inverse kinematics method. The angular momentum, and proton and total widths of the resonance assigned using an R-matrix calculation are in good agreement with earlier measurements performed using normal kinematics, demonstrating that the thick target inverse kinematics method is a useful tool for studying the single-particle structures of neutron-rich nuclei.Systematic studies of the neutron single-particle states in neutron-rich nuclei give direct evidence of shell evolution with increasing neutron richness, thereby providing a test of current nuclear-structure models. These states are also important for determining the cross-sections of neutron radiative capture reactions in r-process nucleosynthesis. The recent advent of radioactive ion beam (RIB) facilities provides opportunities for investigating the states of neutron-rich nuclei located far from the stability line by direct reactions.A straightforward way to study neutron single-particle states in neutron-rich nuclei is the one-nucleon transfer reaction, e.g., (d, p) reaction, in inverse kinematics [1][2][3]. The final states in these reactions are identified by measuring the proton energy. The spin-parities (J π ) and spectroscopic factors are extracted from the angular distributions of differential cross-sections around 0 degrees in the center-of-mass (c.m.) frame. 0 degrees in the c.m. frame corresponds to 180 degrees in the laboratory (lab.) frame, where the energies of protons are often too low to separate the neighboring states, particularly for heavy nuclei which have highly crowded level densities [3]. In order to measure the low-energy protons in wide angular range and to improve the reconstructed energy resolution in the c.m. frame, a large solid-angle silicon semiconductor detectors a e-mail: nobuaki.imai@kek.jp (SSDs) array with a high segmentation [4][5][6][7] is often employed.The same spectroscopic information can be obtained by investigating the isobaric analog resonances of the final states through measuring proton resonance elastic scattering at a few points of scattering angles. Under the assumption of isospin symmetry, the neutron single-particle configuration of states in a nucleus A+1 Z would be the same as the proton single-particle configuration of states at the high excitation energies in the neighboring nucleus A+1 (Z + 1), called isobaric analog states. When the analog state is above the proton separation energy, the state will be observed in the proton elastic scattering excitation function of a target nucleus A Z as a resonance, called the isobaric analog resonance (IAR). The resonance energy, width, and J π can be obtained from the excitation function by R-matrix analysis [8,9].For unstable n...

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supporting

confidence: 71%

“…< 4.8 MeV, as described in ref. [18]. In the excitation function, the resonance of 69 Ga was clearly observed.…”

mentioning

confidence: 80%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%